Module Debugging: Emit submodules as nested DW_TAG_modules.

llvm-svn: 248511
diff --git a/clang/lib/AST/ExternalASTSource.cpp b/clang/lib/AST/ExternalASTSource.cpp
index f3b15fc5..e3de8c5 100644
--- a/clang/lib/AST/ExternalASTSource.cpp
+++ b/clang/lib/AST/ExternalASTSource.cpp
@@ -36,9 +36,9 @@
     ASTFile = File->getName();
 }
 
-std::string ExternalASTSource::ASTSourceDescriptor::getFullModuleName() const {
+std::string ExternalASTSource::ASTSourceDescriptor::getModuleName() const {
   if (ClangModule)
-    return ClangModule->getFullModuleName();
+    return ClangModule->Name;
   else
     return PCHModuleName;
 }